226
FZUS51 KBOX 181103
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
702 AM EDT FRI SEP 18 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-190000-
702 AM EDT FRI SEP 18 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A COLD FRONT WILL CROSS THE WATERS TONIGHT THROUGH EARLY TOMORROW
MORNING WITH A PERIOD OF SHOWERS. HIGH PRESSURE BUILDS BACK IN FROM
THE NNW FRIDAY AFTERNOON INTO SATURDAY. THEN A DEVELOPING LOW
PRESSURE SYSTEM BRINGS THE THREAT OF WIDESPREAD RAIN, ESPECIALLY THE
SOUTHERN WATERS ON SUNDAY.
ANZ250-190000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS. PATCHY FOG THIS
MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND NE 4 FT AT 6 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 6 SECONDS AND W 2 FT AT 5 SECONDS.
SAT NIGHT
SE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
3 FT AT 6 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS AND S 1 FOOT AT 2 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND S 1 FOOT
AT 3 SECONDS. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-190000-
MASSACHUSETTS BAY AND IPSWICH BAY-
702 AM EDT FRI SEP 18 2026
TODAY
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 6 SECONDS AND NE 3 FT AT 7 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 6 SECONDS AND SW 2 FT AT 6 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 6 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 6 SECONDS AND S 1 FOOT AT 2 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND SE 1 FOOT
AT 3 SECONDS. SHOWERS LIKELY. PATCHY FOG AFTER MIDNIGHT.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-190000-
CAPE COD BAY-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING N THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N
3 FT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 6 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE MORNING, THEN
1 FOOT OR LESS. WAVE DETAIL: NE 2 FT AT 6 SECONDS AND SE 1 FOOT
AT 3 SECONDS, BECOMING SE 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT
5 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 5 SECONDS. PATCHY
FOG. SHOWERS. VSBY 1 TO 3 NM.
MON AND MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO
20 KT. GUSTS UP TO 30 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-190000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
702 AM EDT FRI SEP 18 2026
TODAY
W WINDS 5 TO 10 KT, BECOMING N THIS AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
PATCHY FOG THIS MORNING. A SLIGHT CHANCE OF SHOWERS THIS MORNING
WITH VSBY 1 NM OR LESS.
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 5 SECONDS AND W 2 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 7 SECONDS AND NW 1 FOOT
AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 7 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 6 SECONDS AND W 1 FOOT AT 2 SECONDS. SHOWERS LIKELY.
PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 20 TO 25 KT. SEAS 3 TO 5 FT. A
CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT. SEAS 5 TO 7 FT. A CHANCE OF
SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-190000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
702 AM EDT FRI SEP 18 2026
TODAY
W WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT THIS
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND
E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS THIS MORNING.
TONIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 7 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 5 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 7 SECONDS AND NW 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 6 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
SE 2 FT AT 5 SECONDS. SHOWERS LIKELY. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 7 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-190000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
702 AM EDT FRI SEP 18 2026
TODAY
W WINDS AROUND 10 KT, BECOMING N THIS AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS THIS MORNING.
TONIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 8 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 5 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 6 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 6 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT, BUILDING TO
3 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: SE 3 FT AT 5 SECONDS.
SHOWERS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
5 FT. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 25 TO 30 KT. SEAS 4 TO 5 FT. A CHANCE OF
SHOWERS.
TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
6 TO 9 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-190000-
NANTUCKET SOUND-
702 AM EDT FRI SEP 18 2026
TODAY
W WINDS AROUND 10 KT, BECOMING N THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 1 FOOT AT
7 SECONDS. A SLIGHT CHANCE OF SHOWERS THIS MORNING.
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND
W 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 6 SECONDS AND NW 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 6 SECONDS. A CHANCE OF
SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 4 SECONDS. SHOWERS LIKELY.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-190000-
VINEYARD SOUND-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING N THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT
12 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND SW 2 FT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NE 1 FOOT AT 4 SECONDS AND W 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 8 SECONDS, BECOMING SE 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 7 SECONDS. SHOWERS, MAINLY
IN THE EVENING. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 20 TO 25 KT. SEAS 2 TO 4 FT. A CHANCE OF
SHOWERS.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-190000-
BUZZARDS BAY-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING N THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND SW 1 FOOT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NE 1 FOOT AT 3 SECONDS AND W 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: SE
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 8 SECONDS. A CHANCE OF
SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SE 1 FOOT AT 2 SECONDS AND E
1 FOOT AT 5 SECONDS, BECOMING SE 1 FOOT AT 3 SECONDS. SHOWERS.
PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-190000-
RHODE ISLAND SOUND-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING N THIS AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS.
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SW
2 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND SW 1 FOOT
AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 6 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 9 SECONDS AND SE 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
2 TO 4 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-190000-
BLOCK ISLAND SOUND-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND S 1 FOOT AT 4 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS. SHOWERS LIKELY IN THE AFTERNOON.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
2 TO 4 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-190000-
BOSTON HARBOR-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT.
SAT
N WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. WAVES 1 FOOT OR LESS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. SHOWERS LIKELY
IN THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS. SHOWERS.
MON THROUGH TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-190000-
NARRAGANSETT BAY-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT.
SAT
NE WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON. SHOWERS LIKELY IN THE AFTERNOON.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG.
SHOWERS. VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP
TO 30 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-190000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
702 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: NW 4 FT
AT 4 SECONDS AND E 3 FT AT 8 SECONDS, BECOMING N 5 FT AT
6 SECONDS AND SW 4 FT AT 5 SECONDS.
SAT
N WINDS 15 TO 20 KT, BECOMING NE 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: N 5 FT AT 6 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 5 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: NE 3 FT AT 6 SECONDS AND W 1 FOOT AT
5 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 4 SECONDS AND E 2 FT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND SE 2 FT
AT 9 SECONDS. SHOWERS LIKELY.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-190000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
702 AM EDT FRI SEP 18 2026
TODAY
W WINDS 10 TO 15 KT, BECOMING NW THIS AFTERNOON. GUSTS
UP TO 20 KT. SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS
AND E 2 FT AT 8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS THIS
MORNING. VSBY 1 NM OR LESS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 5 FT AT 6 SECONDS. PATCHY FOG IN THE EVENING
WITH VSBY 1 TO 3 NM.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 7 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
4 FT AT 7 SECONDS AND W 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 6 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS. SHOWERS LIKELY.
PATCHY FOG AFTER MIDNIGHT.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO
25 KT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 7 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-190000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
702 AM EDT FRI SEP 18 2026
TODAY
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS
AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS THIS MORNING. PATCHY
FOG THIS AFTERNOON WITH VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH
GUSTS UP TO 25 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: NE
4 FT AT 9 SECONDS AND SW 3 FT AT 5 SECONDS. PATCHY FOG IN THE
EVENING WITH VSBY 1 TO 3 NM.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND
W 2 FT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
NE 4 FT AT 7 SECONDS AND NW 1 FOOT AT 5 SECONDS.
SUN
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 7 SECONDS AND SW 1 FOOT AT 6 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO
6 FT AFTER MIDNIGHT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND NE 3 FT
AT 7 SECONDS, BECOMING NE 3 FT AT 8 SECONDS AND NW 1 FOOT AT
5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO
3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
MON NIGHT AND TUE
NE WINDS 20 TO 25 KT, INCREASING TO 25 TO
30 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
6 TO 8 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-190000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
702 AM EDT FRI SEP 18 2026
TODAY
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS THIS
MORNING.
TONIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH
GUSTS UP TO 25 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
4 FT AT 9 SECONDS AND SW 3 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NE 5 FT AT 6 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
4 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND S 1 FOOT AT 4 SECONDS.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT WITH
VSBY 1 TO 3 NM.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
6 FT. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 6 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
7 TO 10 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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